Ham boiler



July'l5, 1930. RISPEL El AL 1,770,431

I HAM BOILER F1101 Oct; 2, 1926 v fem/liar; I fllezazzclei-fizispel 122H I x 40w 6 zldf/{e 10 1 Mi! I 35 on the cover.

Patented July 15, 1930 UE'E" sTATEs PATENT i E ALEXANDER nIsPEL hm)Louis o. 'Lriin'rxnor cnrcAeo, ILLINOIS- HAM BOILER Application filedctober 2; 1926. Serial No. 139,040.

' Our invention relates to an improved ham boiler, embodying, among;other features:

First immunity from jolts'and jars'both 'Figure 1 is a central,longltudinal section,

partly in elevation, of

the invention; j Y s l Figure 2 is-a section on line 2 2 of Figure. 1;and

one embodiment of .urel. l 1 In the embodiment of'the invention se- 1 2lected for illustration the container receives a ham, orother materialto be cooked, while under resilient pressure, which "pressure is'appliedby means of the cover 12 telescoping inside the receptacle. For applyingthe resilient pressure we employ coil springs 14 located at extreme endsof'the cover on. the longitudinal centerline of the boiler. The

lower ends of the springs are preferably held I fchine screws46. Y Inuse; the ham, or. other article to be 85v qcooked is placed in thereceptacle andthe -coverjset on top of it. It is now necessary to pushthe abutments 18 down andmc'omagainst accidental displacement by bosses16 :At the topof'eachs'pring an abutment member 18 held againstdisplacement with respect to the abutment 18 in thesame way as the lowerend a 0 of the spring, butweprefer to employ Va -stud V rmovement gInlarge installations this is 20' extending down part away inside thespring. When such a'stud is, employed is preferably made square toreduce the area. of

contact between the stud and the coils of the 1 apress is-used'anignorant workmanmay,

- and s'oftenpdoes, apply f' the pressure much spring and minimizefriction; g i

" The means for hold'ng down the-abutments 18 comprises 'a-tensionmember, or holddown I ii a 22 for each'a'butment, :Ea'c'h hold-downcom-I V .usually-pushingharder-:againstthe: middlea I f :,the cover than'theendsat first, there is 9] prises a relatively straight portion 24provid'ed with a seriesof rack teeth 26 adapted'to almost, but notquite,to the center. line of the Figure 31s a section on of Fig- The top ofthe spring maybe jplate or beam down from above to engage hook over thetooth 28 on the edge of the re; ceptacle and prevent'upw'ard movement ofi I the tension member; and'a' curved portion 30 extending in over theend of the cover 12 55 spring 14. The tension members has a.bi'furc'ated. end pivoted on' a pintle 32 passing 7 through theabutment18'.

To guide the' parts and hold them in satis I I factory alignment,without interfering with the freedom of motionnecessary to permit if thecontents of the receptacle to expand and contract during treatment weprovidea vertical guidejSt close beside each spring. The

.guide 3-it preferably has an'H section rather well fill-ed in andslidesin a vertical guide way 36. The side walls of this guide-way are 2 cutawayjat 38, partly to savemetal and facilitate cleaning and partly toafi'ord aslot for receiving a limit stop 40, illustrated as a simplemachine screwpassing through the lpwer end of the guideand projectinginto the sot. t y.

'lio brace the structure and increase its ri idity, we prefer to connectthe guide-ways 36at opposite ends of the boiler by a beamor reach 42,thereby constituting both wguideways and the reach a rigid bridgematerially I reinforcing the cover12. The'feet of the guide-ways aremoreor less enlarged, as at w 4:4, to engage the surface of the coverover a 7 substantlal area,- and the whole is fastened to the cover inany suitable way', as by ma press the springs whilethe tensionvmembersride over'the teeth 28 andprevent return' done in'a power 'pressvwhic'hmoves a flat 0th abutments simultaneously; WVhen such more vigorouslythanis necessary orfdesir- I .7 able; Asl'the contents of the receptacleis danger of breaking the cover by buckling it up in the middle when thedevice is thus improperly handled. It will be noted from the drawingsthat the distance A in Figure 1 down tothe reach 42 is equal to theclear ance between the guide 34 and the cover and also equal to theclearance between the studs 20 and the bosses 16. Thus, the abnormal andimproper load will be transmitted to the cover, not only atpointscorresponding with he bosses 16 or with the ends of theguides, but alsoover much larger areas spaced much nearer the center of the cover, towit, the feet 44 of the guide-ways.

On the other hand, in a smaller establishment wherecno power press isavailable, the complete independence of the two abutments 18 makes itrelatively easy for a workman to place his foot first on one abutmentand then on the other and get both springs properly compressed. Thestrength of these springs in a unit of ordinary size is such that a manof ordinary weight could not conveniently compress both springs at thesame time by means of his weight.

The location of the springs 14 at the extreme ends of the cover resultsin a maximum levelingeftect, If the contents of the container tends tohold the cover with one end tipped up, say'one-half inch higher than theother, the excess in the spring tension at the high end over that at thelow end will be greater and its effective lever arm longer than with thesprings located a less distance fronithe center. I V

Neither the abutments 18 nor the tension members are rigid withthe cover12, there being considerable looseness to permit the guides 34 to movefreely without binding. An accidental blow from one end, as by throwinganother container up against the end of container already stacked in theboilingvat, will ordinarily strike thestraight portion 24 of thetensionmember and have no appreciable effect other than'to push it against thetooth 28. However, if the impact should come at a slight angle fromabove it would strike the curved portion 40 intermediate the pivot 32and the tooth 28. The

impact would thus be distributedbetween the body of the receptacle andthe cover. lVhere, "as in prlor devices, parts rigid with the cover, orhaving rela'tively'little play with respect thereto, project outsubstantially'into the vertical plane of the straight portions 24, suchimpacts will always be delivered to the .cover and shift the cover toand fro in the receptacle. If they happen to be at all violent, thisshift may readily unhook the tension member at the remote end of the receptaclec These objections are eliminated by the construction hereinabove set forth,-

7 'v ithout further elaboration, the foregoing vill so fully explain thegist of our inventionthat others may, by applying'current knowledge,readily adapt the same for use under various conditions of servicewithout eliminating certain features which may properly be said toconstitute the essential items of novelty involved, which items areintended to be defined and secured to us by the following claims.

Ve claim:

1. A ham boiler comprising a receptacle, a

.cover telescoping inside said receptacle,

springs near the ends of said cover for pressing down on said cover,abutments riding on the upper ends of said springs to compresssaidsprings, hold-downs pivoted on said abutments, pawl and rack meansacting between said hold-downs and receptacle to prevent upward movementof said holddowns, a vertically slidable guide for each spring abutment,said guides being offset beside said springs on the center line of theboiler nearer the center than said springs, a spring guiding stud oneach abutment, projecting down inside the spring to keep said spring inalignment, and a bridge rigid with said cover, said bridge comprising acentral reach, vertical end portions slidably receiving said guides, andenlarged feet at the bottoms of said end pprtions, said feet resting onthe cover, and said reach extending up to such a level that a straightimplement employed topressdown said abutment will strike said reach atthe same time that said studs and said guides engage said cover, and astop for each guide preventing complete separation of said guide andcover.

2. A ham boiler comprising a receptacle, a cover telescoping inside saidreceptacle, springs for pressing down on said cover, abutments riding onthe upper ends of said springs to compress said springs, hold-downspivoted on said abutments, pawl and rack means acting between saidhold-downs and receptacle to prevent upward movement of said hold-downs,a-guide for each spring abutment, and a bridge rigid with said cover,said bridge comprising a central reach and vertical end portionsslidably receiving said guides, sald reach extending up to such a levelthat a straight implement employed to press down said abutments willstrike said reach-at the same time that said guides enrespect to saidcover, ofiset tensionmembers 'pivotedon said abutments, and tooth andrack means on said tension members and receptacle for holding saidtension members down, said tension members and guides being offsetsubstantially equally on opposite sides of'said-springs along the centerline of the boiler.,i r

4. A ham boiler comprisingafreceptacle, a cover telescoping inside saidreceptacle, springs ridingon said cover, abutments rid-. ing on saidsprings, and connections for holding said abutments in place comprisingoffset guides rigid with said abutments and, vertically slidable'withrespect to said cover, and ofi'set 'tens'ion members pivoted on saidabutments, andtooth and rack means on said tension members andreceptacle for'holding '7 said tension members down, said tensionmembers and guides being offset on opposite sides of said springs. V r Y5. A ham boiler comprising a receptacle, a cover telescopinginside saidreceptacle, springs ridingon said cover, ab utments rid ing on saidsprings, and connections for holding said abutments inplace comprisingabutment guides, offset tension members, pivoted on said abutments, andtooth and rack means on said tension members and receptacle for holdingsaid tension'members I down, said tension members and guides beingoffset on opposite sides of said springs.

6. A ham boiler comprising a receptacle,

a cover telescopically movable toward and away from said receptacle tocompress maso teria-l between itself and the receptacle, re-

silient means symmetrically'placed near the ends 0t said cover forpressing down on said Ieceptacle, tensioning means, and means for Ylimiting zthetension, said limiting means as establishing a directthrust connection to the cover over two distributed symmetrically placedareas thereof extending nearer to th center than said resilient means.

'7. A ham boiler comprising a receptacle, 40 a cover telescoping insidesaid receptacle, a centrally located reach rigidly mounted" on." andbracing saidcover,.and resilient means 7 located at the ends of saidreach and leaving the space above the same free and unobstruct- 7 ed,for connecting said receptacle and cover and pressing said cover down. iV In witness whereof, we hereuntosubscribe our-names this 28th dayofSeptember, 1926. 1 I I ALEXANDER RISPEL. f V LOUIS C. LIEDTKE.

